/*
 *    Copyright © OpenAtom Foundation.
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */

package com.inspur.edp.bef.core.session.distributed.common;

import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;

public class NoLock implements Lock {

  private static NoLock instance = new NoLock();

  public static NoLock getInstance() {
    return instance;
  }

  @Override
  public void lock() {
  }

  @Override
  public void lockInterruptibly() throws InterruptedException {
  }

  @Override
  public boolean tryLock() {
    return true;
  }

  @Override
  public boolean tryLock(long time, TimeUnit unit) throws InterruptedException {
    return true;
  }

  @Override
  public void unlock() {
  }

  @Override
  public Condition newCondition() {
    return null;
  }
}
